Does the Macbook have wide color gamut display??

Only the 2016 macbook pros, and the current 5k imac have wide gamut now.

By the way. Can the downvoter educate us on which other macs have wide gamut now, or do you even know what that is?

The 12 inch Macbook does not. Only the 2016 Pros, 5k iMac, and iPhone 7 have P3 color gamut. As for whether you need it, probably not. I've put the 12 inch and my 13 TB Pro side by side, and you'd hardly see the difference. The difference is minimal. If you're a pro photographer or graphic designer, it may be useful, but for general use it's more just a "step-up" upgrade. What IS important on the new Pro's is the brightness.

Step outside, and put the 12 inch and 13 inch side by side on full brightness and the 13 inch looks great in indirect sunlight, and still passable in direct sunlight. The 12 doesn't fare well. The new pros have a 66% brighter screen. Thats heaps, the same as an iPhone.

The 12" model? No.